Hypopygus minissimus de Santana & Crampton, 2011

Family:  Hypopomidae (Bluntnose knifefishes)
Max. size:  6.2 cm TL (male/unsexed)
Environment:  benthopelagic; freshwater
Distribution:  South America: Hypopygus minissimus is known only from the upper Orinoco in Venezuela (vicinity of San Fernando de Atabapo, Río Cunucunuma, and Río Sipapo), and from a tributary of the Casiquiare canal in Venezuela (Río Candela) (Ref. 88778).
Diagnosis:  Hypopygus minissimus is diagnosed from congeners by the following combination of characters: the absence of oblique bands (versus presence in all congeners), the absence of scales at midbody (versus presence in all congeners), the absence of the sixth infraorbital bone (versus presence in all congeners except H. hoedemani and H. lepturus), the total number of anal-fin rays (102–113 versus 136–170 in all congeners except H. hoedemani and H. lepturus), and the dorsal rami of the intermittent branch of the anterior lateral line nerve visible as two black parallel lines (versus not visible in H. ortegai) (Ref. 88778).
Biology: 
IUCN Red List Status: Data deficient (DD); Date assessed: 31 August 2020 Ref. (130435)
Threat to humans:  harmless


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